摘要
198 9年至 1996年间 ,台山红岭种子园从美国、澳大利亚、津巴布韦引入湿地松基因资源种子共 4 0 7份 ,包括有 6个种源、2 13个全同胞家系和 188个半同胞家系。利用其中 370份材料营建种源林 1片、基因资源林 6片 ,面积共 16 .85hm2 。根据这 7片测定林的调查数据分析了新引材料的遗传品质以及选择潜力 ,并通过性状年度相关分析 ,探讨早期选择的可靠性。结果表明 ,新引材料普遍具有较强的适应能力 ,造林保存率平均达 90 %以上 ;在生长量方面 ,有 6 6 .6 7%的种源、82 .14 %的家系优于台山湿地松初级种子园种 ,所有参试材料的树高、材积平均现实增益分别为 10 .0 7%和 30 .4 5% ;在家系入选率为 50 %和每个入选家系内选择 2株优树的前提下 ,入选群体树高、材积的平均预期选择增益分别为 2 8.51%和 6 0 .79% ;1年生的树高和 3年生的树高、胸径、材积与 7年生的家系生长量相关密切 ,3年生时生长不良的家系到
seed lots of slash pine ( Pinus elliottii ) were introduced from United States,Australia and Zimbabwe,from 1989 to 1996. Among these seed lots,there were 6 provenances,188 half sib families,and 213 full sib families.One provenance trial stand,6 gene resource stands were established with a total of 370 seed lots in Taishan Hongling Seed Orchard.And the seed lot from the primary slash pine seed orchard in Taishan was used as control (CK).The total area of these stands was 16.85 hm 2.Based on data from these seven stands,the growth performance and selection potential of these new exotic materials were evaluated,and the reliability of early selection was studied.The results showed that the new materials had good adaptability and the survival rates of stands were above 90%.66.67% provenance and 82.14% families grown better than the CK did.The realized gains were 10.07 % and 30.45% respectively for height and volume growth.It was estimated that the predicted genetic gains of plus trees from these new materials would be 28.51% and 60.79% respectively for height and volume,according to the combined selection method that the top 50% families were selected from these new resources,and then 2 plus trees within each selected family.Correlation coefficients between height growth at age 1,and height,diameter breast height and volume at age 3 and the increment at age 7 were greatly significant.Those families growing poorer at age 3 could not performance very well at age 7.
出处
《林业科学研究》
CSCD
北大核心
2000年第3期225-232,共8页
Forest Research
基金
1992~ 1 997年联合国援助项目!"湿地松
火炬松改良种子园"的部分内容
关键词
湿地松
基因资源
引种效果
种子园
slash pine
provenance
family
growth trait
genetic evaluation
age correlation
